CN203430759U - Hydraulic pump durability test system based on power recovery and inverter technologies - Google Patents
Hydraulic pump durability test system based on power recovery and inverter technologies Download PDFInfo
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- CN203430759U CN203430759U CN201320482332.9U CN201320482332U CN203430759U CN 203430759 U CN203430759 U CN 203430759U CN 201320482332 U CN201320482332 U CN 201320482332U CN 203430759 U CN203430759 U CN 203430759U
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Abstract
The utility model discloses a hydraulic pump durability test system based on power recovery and inverter technologies, which comprises a variable-frequency motor, a hydraulic motor, an overflow valve and an oil tank, the variable-frequency motor is a double-shaft-extension variable-frequency motor, the first shaft extension is connected with a tested hydraulic pump through a first coupling, the second shaft extension is connected with the hydraulic motor through a second coupling, the oil suction port of the tested hydraulic pump communicates with the oil tank, the oil outlet of the tested hydraulic pump communicates with the oil inlet of the hydraulic motor, the oil outlet of the hydraulic motor communicates with the oil tank, the oil inlet of the hydraulic motor communicates with the overflow valve, and the overflow valve communicates with the oil tank. The hydraulic pump durability test system has the advantages that: because recovered energy is used for driving the variable-frequency motor to rotate, on one hand, the power input of the variable-frequency motor can be reduced, so that electricity consumption can be reduced; on the other hand, because the flow passing through a loading valve is extremely low during high pressure, the heat of the hydraulic system is greatly reduced, and meanwhile, the energy consumption of a cooling system is reduced as well.
Description
Technical field
The utility model relates to oil hydraulic pump durability test device, especially relates to the oil hydraulic pump durability test device based on Power Recovery and converter technique.
Background technique
Oil hydraulic pump is the core parts of whole hydraulic system, and its effect is for hydraulic system provides pressure oil, and hydraulic system can be worked.The working state of oil hydraulic pump can exert a decisive influence to whole hydraulic system, and oil hydraulic pump durability is its weak link.Therefore, for guaranteeing oil hydraulic pump normal operation in service time in regulation, select qualified oil hydraulic pump supplier, just must carry out endurance test to oil hydraulic pump.
In existing oil hydraulic pump standard, JB/T 7043-2006 < < hydraulic axial plunger pump > > 6.2.13, JB/T 7041-2006 < < hydraulic gear pump > > 6.2.12, in JB/T 7039-2006 < < hydraulic vane pump > > 6.2.12, different oil hydraulic pump endurance test schemes and evaluation standard are provided respectively.As a kind of hydraulic axial plunger pump endurance test scheme providing in JB/T 7043-2006 < < hydraulic axial plunger pump > > 6.2.13 is: full-load test 2400h.Evaluation standard is: after endurance test, volumetric efficiency is not less than 3 percentage points of specified values, and part must not have the damage of inordinate wear or other form.
Above-mentioned each standard code oil hydraulic pump endurance test scheme and Failure Assessment standard, but do not provide oil hydraulic pump durability test equipment.
Because the rated speed of different oil hydraulic pumps is different often, and current oil hydraulic pump durability test device is to utilize threephase asynchronous to drag oil hydraulic pump, and testing apparatus itself does not change the function of oil hydraulic pump rotating speed.Therefore, the actual conditions of simulated solution press pump, has caused most oil hydraulic pump endurance test under rated speed, not carry out well.
Because the rated pressure of oil hydraulic pump is generally all very high, while particularly adopting overload test scheme, hydraulic system pressure is 1.25 times of oil hydraulic pump rated pressure or higher.Meanwhile, the endurance test of oil hydraulic pump is long time running, and energy consumption is serious.
The energy that conventional oil hydraulic pump endurance test system consumes, is nearly all that hydraulic oil is converted into Hydraulic System Fever through charge valve, and high especially to radiation system requirement like this, operating heat radiation system needs lot of energy simultaneously.
Summary of the invention
Technical problem to be solved in the utility model is to provide the less oil hydraulic pump durability test device based on Power Recovery and converter technique of a kind of energy consumption.
The utility model solves the problems of the technologies described above adopted technological scheme: a kind of oil hydraulic pump durability test device based on Power Recovery and converter technique, comprise variable-frequency motor, oil hydraulic motor, relief valve and fuel tank, described variable-frequency motor is Double shaft-extension variable-frequency motor, the first described shaft extension is connected with tested oil hydraulic pump by the first coupling, the second described shaft extension is connected with oil hydraulic motor by the second coupling, the inlet port of tested oil hydraulic pump is communicated with fuel tank, the oil outlet of tested oil hydraulic pump is communicated with the filler opening of oil hydraulic motor, the oil outlet of oil hydraulic motor is communicated with fuel tank, the filler opening of oil hydraulic motor is communicated with relief valve, relief valve is communicated with fuel tank.
Described tested oil hydraulic pump is hydraulic planger pump, on the leakage hydraulic fluid port of described tested oil hydraulic pump and the connecting pipeline of fuel tank, the first pressure transducer, the first temperature transducer and first flow meter is installed.
On the oil outlet of oil hydraulic motor and the connecting pipeline between fuel tank, the second flowmeter is installed, on the leakage hydraulic fluid port of oil hydraulic motor and the connecting pipeline of fuel tank, the 3rd flowmeter is installed, the second pressure transducer and the second temperature transducer are installed on the filler opening of oil hydraulic motor and the connecting pipeline of relief valve, the 4th flowmeter is installed on the connecting pipeline of relief valve and fuel tank.
Compared with prior art, the utility model has the advantages that and adopt variable-frequency motor to drive tested oil hydraulic pump to rotate oil hydraulic pump endurance test.Because variable-frequency motor rotating speed can obtain various different rotating speeds by Frequency Converter Control, can be used for like this dragging the oil hydraulic pump that various rated speeds are different, it is turned round under rated speed.In oil hydraulic pump durability test device, increase oil hydraulic motor and carried out hydraulic system power recovery.Oil hydraulic motor, by being connected with the second shaft extension of variable-frequency motor, is used for dragging variable-frequency motor rotation by the energy of recovery, can reduce on the one hand the power input of variable-frequency motor, reduces power consumption; On the other hand, the flow through charge valve during due to high pressure is especially little, so greatly reduced the heating value of hydraulic system, has reduced the requirement to radiation system, has also reduced the energy consumption of radiation system simultaneously.
Accompanying drawing explanation
Fig. 1 is structural drawing of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
A kind of oil hydraulic pump durability test device based on Power Recovery and converter technique, comprise variable-frequency motor 1, oil hydraulic motor 10, relief valve 13 and fuel tank 15, variable-frequency motor 1 is Double shaft-extension variable-frequency motor, the first shaft extension is connected with tested oil hydraulic pump 7 by the first coupling 2, the second shaft extension is connected with oil hydraulic motor 10 by the second coupling 3, the inlet port of tested oil hydraulic pump 7 is communicated with fuel tank 15, the oil outlet of tested oil hydraulic pump 7 is communicated with the filler opening of oil hydraulic motor 10, the oil outlet of oil hydraulic motor 10 is communicated with fuel tank 15, the filler opening of oil hydraulic motor 10 is communicated with relief valve 13, relief valve 13 is communicated with fuel tank 15.
This tested oil hydraulic pump 7 is hydraulic planger pump, and the first pressure transducer 4, the first temperature transducer 5 and first flow meter 6 are installed on the leakage hydraulic fluid port of tested oil hydraulic pump 7 and the connecting pipeline of fuel tank 15.The second flowmeter 11 is installed on the connecting pipeline between the oil outlet of oil hydraulic motor 10 and fuel tank 15, on the leakage hydraulic fluid port of oil hydraulic motor 10 and the connecting pipeline of fuel tank 15, the 3rd flowmeter 12 is installed, the second pressure transducer 8 and the second temperature transducer 9 are installed on the connecting pipeline of the filler opening of oil hydraulic motor 10 and relief valve 13, on the connecting pipeline of relief valve 13 and fuel tank 15, the 4th flowmeter 14 are installed.
Claims (3)
1. the oil hydraulic pump durability test device based on Power Recovery and converter technique, it is characterized in that comprising variable-frequency motor, oil hydraulic motor, relief valve and fuel tank, described variable-frequency motor is Double shaft-extension variable-frequency motor, the first described shaft extension is connected with tested oil hydraulic pump by the first coupling, the second described shaft extension is connected with oil hydraulic motor by the second coupling, the inlet port of tested oil hydraulic pump is communicated with fuel tank, the oil outlet of tested oil hydraulic pump is communicated with the filler opening of oil hydraulic motor, the oil outlet of oil hydraulic motor is communicated with fuel tank, the filler opening of oil hydraulic motor is communicated with relief valve, relief valve is communicated with fuel tank.
2. a kind of oil hydraulic pump durability test device based on Power Recovery and converter technique according to claim 1, it is characterized in that described tested oil hydraulic pump is hydraulic planger pump, on the leakage hydraulic fluid port of described tested oil hydraulic pump and the connecting pipeline of fuel tank, the first pressure transducer, the first temperature transducer and first flow meter are installed.
3. a kind of oil hydraulic pump durability test device based on Power Recovery and converter technique according to claim 1, it is characterized in that, on the oil outlet of oil hydraulic motor and the connecting pipeline between fuel tank, the second flowmeter is installed, on the leakage hydraulic fluid port of oil hydraulic motor and the connecting pipeline of fuel tank, the 3rd flowmeter is installed, the second pressure transducer and the second temperature transducer are installed on the filler opening of oil hydraulic motor and the connecting pipeline of relief valve, the 4th flowmeter is installed on the connecting pipeline of relief valve and fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320482332.9U CN203430759U (en) | 2013-08-08 | 2013-08-08 | Hydraulic pump durability test system based on power recovery and inverter technologies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320482332.9U CN203430759U (en) | 2013-08-08 | 2013-08-08 | Hydraulic pump durability test system based on power recovery and inverter technologies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203430759U true CN203430759U (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320482332.9U Expired - Fee Related CN203430759U (en) | 2013-08-08 | 2013-08-08 | Hydraulic pump durability test system based on power recovery and inverter technologies |
Country Status (1)
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| CN (1) | CN203430759U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533776A (en) * | 2014-12-09 | 2015-04-22 | 广东精铟机械有限公司 | Offshore oil platform hydraulic pump test trolley |
| CN105782166A (en) * | 2016-05-18 | 2016-07-20 | 吉林大学 | Energy-saving type hydraulic pump durability testing table with hydraulic analog loading |
| CN107620701A (en) * | 2017-09-18 | 2018-01-23 | 北京航空航天大学 | The driving of high speed constant pressure variable plunger pump and load change test device based on power back off |
| CN108266362A (en) * | 2017-12-29 | 2018-07-10 | 浙江大学 | constant pressure pump test platform and test method |
-
2013
- 2013-08-08 CN CN201320482332.9U patent/CN203430759U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533776A (en) * | 2014-12-09 | 2015-04-22 | 广东精铟机械有限公司 | Offshore oil platform hydraulic pump test trolley |
| CN105782166A (en) * | 2016-05-18 | 2016-07-20 | 吉林大学 | Energy-saving type hydraulic pump durability testing table with hydraulic analog loading |
| CN107620701A (en) * | 2017-09-18 | 2018-01-23 | 北京航空航天大学 | The driving of high speed constant pressure variable plunger pump and load change test device based on power back off |
| CN108266362A (en) * | 2017-12-29 | 2018-07-10 | 浙江大学 | constant pressure pump test platform and test method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20190808 |
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| CF01 | Termination of patent right due to non-payment of annual fee |